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Issue: Vol. 625 No. 2: 9 Nov. 2023
Type: Article
Published: 2023-11-09
DOI: 10.11646/phytotaxa.625.2.6
Page range: 201-210
Abstract views: 174
PDF downloaded: 11

Bulbophylum sect. Cirhopetallum s. str. (Orchidaceae) in Vietnam with the description of a new species, B. thangii, and a new national record, B. fenestratum

Graduate University of Science and Technology; VAST; 18 Hoang Quoc Viet; Cau Giay District; Ha Noi; Vietnam; Institute of Tropical Biology Vietnam Academy of Science and Technology; 85 Tran Quoc Toan; Dist.3; Ho Chi Minh City; Vietnam
Komarov Botanical Institute of the Russian Academy of Sciences; Prof. Popov Street 2; 197376; St. Petersburg; Russia
Komarov Botanical Institute of the Russian Academy of Sciences; Prof. Popov Street 2; 197376; St. Petersburg; Russia
School of Education; Can Tho University; 3/2 Street; Ninh Kieu District; Can Tho City; Vietnam
Institute of Applied Technology; Thu Dau Mot University; No. 6 Tran Van On Street; Phu Hoa Ward; Thu Dau Mot City; Binh Duong Province; Vietnam
Swiss–Orchid–Garden; Untermattstrasse 27; 8370 Sirnach; Switzerland
Graduate University of Science and Technology; VAST; 18 Hoang Quoc Viet; Cau Giay District; Ha Noi; Vietnam; Institute of Tropical Biology Vietnam Academy of Science and Technology; 85 Tran Quoc Toan; Dist.3; Ho Chi Minh City; Vietnam
Graduate University of Science and Technology; VAST; 18 Hoang Quoc Viet; Cau Giay District; Ha Noi; Vietnam; Institute of Tropical Biology Vietnam Academy of Science and Technology; 85 Tran Quoc Toan; Dist.3; Ho Chi Minh City; Vietnam
endemism plant diversity plant geography plant taxonomy southern Vietnam Monocots

Abstract

The taxonomical survey of Bulbophyllum sect. Cirhopetallum s. str. with the key for identification of all four species occurring in Vietnam is presented. Bulbophylum thangii, belonging to this section and discovered in Khanh Hoa Province, southern Vietnam, is described as a new species for science. The new species shares prominent tooth on the inner side of stelidia with all species in its section but differs from them in warty or colliculate sepals and lip. Bulophyllum fenestratum from the same section is reported from Dong Nai Province as a new national record for the orchid flora of Vietnam. All species in the section are illustrated by plates with analytical color photos. Data on types, habitat, phenology, distribution, taxonomic remarks, and lists of studied specimens are reported for all species as well.

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